Loggable.hxx

 
//
//  Copyright Phoenix Contact GmbH & Co. KG
//
#pragma once
#include "Arp/Base/Core/Arp.hpp"
#include "Arp/Base/Core/TypeName.hxx"
#include "Arp/System/Commons/Diagnostics/Logging/Logger.hxx"
 
namespace Arp { namespace System { namespace Commons { namespace Diagnostics { namespace Logging
{
 
//----------- Primary template of class Loggable<T, bool, bool> ---------------
 
template<class T, bool IsSingleton = false, bool IsStaticClass = false>
class Loggable
{
protected: // construction
    Loggable(void) = default;
 
protected: // static fields
    static Logger<T> log;
};
 
// Initializing of static member of class Loggable<T, bool, bool>
template<class T, bool IsSingleton, bool IsStaticClass>
Logger<T> Loggable<T, IsSingleton, IsStaticClass>::log;
 
 
//------- Template specialization Loaggable<T, true> for singletons -----------
 
template<class T>
class Loggable<T, true>
{
protected: // construction
    Loggable(void) = default;
 
protected: // fields
    // use non static field here in specialization to avoid explicit logger initialization
    Logger<T> log;
};
 
//---- Template specialization Loggable<T, false, true> for static classes ----
 
template<class T>
class Loggable<T, false, true>
{
public: // static operation
    static void InitializeLogger(void);
 
protected: // construction
    Loggable(void) = default;
 
protected: // fields
    static Logger<T> log;
};
 
// inline methods of class Loggable<T, false, true>
 
template<class T>
inline void Loggable<T, false, true>::InitializeLogger()
{
    log.InitializeOnce(CommonTypeName<T>());
}
 
// Initializing of static member of class Loggable<T, false, true>
template<class T>
Logger<T> Loggable<T, false, true>::log;
 
}}}}} // end of namespace Arp::System::Commons::Diagnostics::Logging